+void pa_sink_input_drop(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
+
+void pa_sink_input_set_volume(struct pa_sink_input *i, pa_volume_t volume);
+
+void pa_sink_input_cork(struct pa_sink_input *i, int b);
+
+void pa_sink_input_set_rate(struct pa_sink_input *i, uint32_t rate);